Growing Catgrass in Winter?

I grew catgrass for my 3 all summer long. But now that winter is here, I\'m finding that it won\'t sprout. Our house is not conducive to growing this kind of thing inside and my cats really miss it. I\'ve seen those $150.00 spheres that you can grow herbs in. I can whine for it for Christmas if anyone thinks that would work. Has anyone had any luck growing catgrass in winter in their home?

You need sun and warmth to grow anything in the winter. You can make a greenhouse for the pot of grass. My Human has a sort of translucent tall soup container and poked a quarter-sized hole in the top. The container fits just right on my pot of grass. The container acts like a mini greenhouse and encourages the seeds to sprout.